71473432021507 has 4 divisors (see below), whose sum is σ = 72141408021816. Its totient is φ = 70805456021200.

The previous prime is 71473432021477. The next prime is 71473432021517. The reversal of 71473432021507 is 70512023437417.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71473432021507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71473432021517) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 333987999994 + ... + 333988000207.

It is an arithmetic number, because the mean of its divisors is an integer number (18035352005454).

Almost surely, 2^{71473432021507} is an apocalyptic number.

71473432021507 is a deficient number, since it is larger than the sum of its proper divisors (667976000309).

71473432021507 is a wasteful number, since it uses less digits than its factorization.

71473432021507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667976000308.

The product of its (nonzero) digits is 987840, while the sum is 46.

The spelling of 71473432021507 in words is "seventy-one trillion, four hundred seventy-three billion, four hundred thirty-two million, twenty-one thousand, five hundred seven".